Thought I would throw my 2 cents in
I've already made contact with kimosquabbie and a few others about Kotin
Raphael Kotin was my great great grandfather. His daughter Gitel married Isaac Paisner, my Great grandfather.
through contact with Joel Spray (another Kotin descendant) we made the connection . ( he remembers a great aunt of mine visiting with his family).
Anyway I posted a essay my grandfather wrote on his grandfather - Raphael Kotin which you may find interesting
let me know if you can't access it
Raph Paisner